Overview Housing & Curb



Sigrist Pipe Chase Housings, Curbs and Sigrist Exit Seals® by Alta Products are the best weather-tight roof penetration systems and curbs in the world. Made in the USA using the most advanced computer guided cutting, forming and finishing systems. Our proven design eliminates the need for leak-prone roof pipe boots and the use of sealants and clamps. Our housings are powder-coated with a 2-mil. thick proprietary UV inhibited finish. Warranted for 20 years.


Housing• .080” thick aluminum housing and curb
• UV protected powder coated finish (2mil thick)
• Stainless steel fasteners
• Full Thermal Break in the housing & curb
• Gaskets included for the lid to housing & housing to curb connection surfaces

HousingSmall Pipe Chase Housing – Designed for small AC Condensing units up to 7 1/2 tons. Accommodates up to 7 Sigrist Exit Seals (4 on one side, 3 on the opposing
Small Pipe Chase Housing #AL-161010 16.5” x 10” x 12.5” tall
Curb #: AL-158C – 14.5” X 8” X 14” tall

HousingTop view of fully loaded Medium Pipe Chase Housing with 16 Sigrist Exit Seals (and contractor installed water and power lines) Note: The lid has been removed to illustrate this feature.

HousingWeather-tight and ready for future expansion without having to call in the roofer. Once installed, the Pipe Chase Housing is ready to have up to 16 lines added to it as more lines are required – and without having to call back the roofer to re-seal the roof.



Our most popular Medium and Small housings and curbs are readily available.

We strive to ship all orders within 24 hours from receipt of the order so do not hesitate to reach out to us.

*This is a non-stocked item – production lead time can run as long as 6 weeks. We offer a “make and hold” program that can help mitigate the long lead time.